Out-of-this-world Cave Exploration

Part of a collection of smaller caves, it is the Son Doong Cave truly stands out from the crowd simply because of its sheer size.
Said to be the world’s largest cave, entry into the inner sanctum of this natural mammoth is limited, with permissions requirement for getting deep into its core.
With its secluded location and UNESCO-protected status, this Vietnam example inside the Phong Nha-Ke Bang National Park brings out the true adventurer in each traveller.

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